Childcraft  How things work  eng 

 - Chicago, Ill.  World Book  1988 
 - 336 
 - Childcraft : the how and why library .
<br/><br/> Explains how things work, from airplanes to X-ray machines 
<br/><br/><label>ISBN: </label>9780716622710 
<br/><br/><label>Dewey Class. No.: </label>500.03  / CHI